The lecture (or series) was like whatever metaphor comes to mind - doesn't need to make sense
My favorite part of the lecture(s) was ...
Something that could be improved is ...
After the lecture(s), I found myself thinking a lot about ...
Something I wanted to ask/say but didn't was ...
A topic I'd love to see as a free lecture would be ...
Someone I know who would be a good lecturer is...
Next time, Taste of VISTA Free Public Lectures should consider whatever comes to mind first